linux-imx

/*

 * AHCI SATA platform library

 *

 * Copyright 2004-2005  Red Hat, Inc.

 *   Jeff Garzik <jgarzik@pobox.com>

 * Copyright 2010  MontaVista Software, LLC.

 *   Anton Vorontsov <avorontsov@ru.mvista.com>

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2, or (at your option)

 * any later version.

 */

​

#include <linux/clk.h>

#include <linux/kernel.h>

#include <linux/gfp.h>

#include <linux/module.h>

#include <linux/pm.h>

#include <linux/interrupt.h>

#include <linux/device.h>

#include <linux/platform_device.h>

#include <linux/libata.h>

#include <linux/ahci_platform.h>

#include <linux/phy/phy.h>

#include <linux/pm_runtime.h>

#include <linux/of_platform.h>

#include <linux/reset.h>

#include "ahci.h"

​

static void ahci_host_stop(struct ata_host *host);

​

struct ata_port_operations ahci_platform_ops = {

    .inherits   = &ahci_ops,

    .host_stop  = ahci_host_stop,

};

EXPORT_SYMBOL_GPL(ahci_platform_ops);

​

/**

 * ahci_platform_enable_phys - Enable PHYs

 * @hpriv: host private area to store config values

 *

 * This function enables all the PHYs found in hpriv->phys, if any.

 * If a PHY fails to be enabled, it disables all the PHYs already

 * enabled in reverse order and returns an error.

 *

 * RETURNS:

 * 0 on success otherwise a negative error code

 */

static int ahci_platform_enable_phys(struct ahci_host_priv *hpriv)

{

    int rc, i;

​

    for (i = 0; i < hpriv->nports; i++) {

        rc = phy_init(hpriv->phys[i]);

        if (rc)

            goto disable_phys;

​

        rc = phy_set_mode(hpriv->phys[i], PHY_MODE_SATA);

        if (rc) {

            phy_exit(hpriv->phys[i]);

            goto disable_phys;

        }